Fig. 2

Epidemiology and genetic diversity of S. mansoni in Mayuge District from 2004–2006. Prevalence of S. mansoni infection (a) and mean infection intensity, as eggs per gram of stool (epg) (b), estimated with three days of replicate Kato-Katz in each of the three schools sampled. Red arrows indicate timing of mass praziquantel treatment. c The mean allelic richness for all infrapopulations sampled at each timepoint for each school. No miracidia were isolated from infrapopulations in Bwondha at week 56